4a231017ff
Make _all_ hotplug variables available to the forked udev, the udev callouts and the udev dev.d/ scripts. We put the whole environment into a buffer and send it over the udevd socket. udevd recreates *envp[] and passes it to the exec().
53 lines
1.4 KiB
C
53 lines
1.4 KiB
C
/*
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* udevd.h
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*
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* Userspace devfs
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*
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* Copyright (C) 2004 Ling, Xiaofeng <xiaofeng.ling@intel.com>
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* Copyright (C) 2004 Kay Sievers <kay.sievers@vrfy.org>
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*
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 675 Mass Ave, Cambridge, MA 02139, USA.
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*
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*/
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#include "list.h"
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#define UDEV_MAGIC "udevd_" UDEV_VERSION
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#define EVENT_TIMEOUT_SEC 10
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#define UDEVD_SOCK_PATH "udevd"
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#define SEND_WAIT_MAX_SECONDS 3
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#define SEND_WAIT_LOOP_PER_SECOND 10
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/* environment buffer, should match the kernel's size in lib/kobject_uevent.h */
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#define HOTPLUG_BUFFER_SIZE 1024
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#define HOTPLUG_NUM_ENVP 32
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struct udevsend_msg {
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char magic[20];
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char envbuf[HOTPLUG_BUFFER_SIZE];
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};
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struct hotplug_msg {
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struct list_head list;
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pid_t pid;
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long queue_time;
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char *action;
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char *devpath;
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char *subsystem;
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unsigned long long seqnum;
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char *envp[HOTPLUG_NUM_ENVP];
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char envbuf[];
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};
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